Car truck



J. A. SHAFER Jan. 4, 193s.

CAR TRUCK Filed May 10, 1935 INVENTOR: James or/5710]?? BY C.%l KMATTORNEY Elli seemed. im, 4, teas4 Jmes ll.. Shafer, East Cleveland,hio, assigner to National llfllalleable and Steel Castings iComgiainy,Cleveland, Uliio, a corporation or @hic amputation may it, was, semi No.'ecru it caras. (ci. rosisti This application is a continuation-impartof my application Serial Nbertlll. tiled. Def cember l?, i931 andrelates to improvements in car trucks.

for easily and eitectlvely talrlhg care of and compens-ating tot; wearbetween the bolster and side iframe ol a truck. 1 y

mother object isi to provide ak replaceable member, or members, adaptedto compensate for the wear. between bolster trunnions or dowcls and theside trame of a. truck. Further objects will be apparent from thefollowing description ot' the invention and ot the preferred embodimentthereot, lllustated in the drawing, in w *licht lll Figure l ls ahorizontal .sectional view slibtwlng a portion ot va sideirame embodyingmy lnventico. o Figure 2 is a vertical sectional vlewshow'ing onebolster dowel in place vand taken on a. line trausverse ci the sideframe. Figure ilL is a blau View of bushing member ernboclyiue myinvention. liu Figure l, the dotted line 2 indicates the remerci outlineor the end portion o the bolster extending throueh a hole or window lna. side treme t and bovine; dowardly depending dowels or trunhious Il.lt will, of course, be understood that the 'bolster at itsA opposite endhas similar dotrels tor eneagiue with thewpcosite side trame et thetruclr, bute description of the cooperation between one end oi thebolsterand l associated side trames will sumce tor au understanding oilmy present invention. The bolster aud side frame here shown are ot thesalue type as illustrated lnmy application No. 531,550, andv 'lu myPatent No. l'lltt, dated Allerltember lil,

The dowels ft preterablyrest on the spring` .to cotos E5 on tot ottbespririgs t, which in tumfare supported by the bottom part ci' theside trame (riot shower). Suitable plugs l may be carried ou the serinecaps to assist in keeping the springs ir place. The dowels extendthrough holes ll lo the `sliielf of the side tra-me and 'since thebolster, through the dowels on its opposite ends,

o enable the iusertiouol said bushing members,

.flu object of this invention is to provide means` which are shownarcuatein form. `Each bushing member is in the shape of a'ninverted l.in cross section, as best seen in Figure 3,'so that the top brim thereofmay serve to keep it Jrom sliding or falling down in the hole. Any othersuitable shape may, of course, be used which would ,accomplish thispurpose and the hole il could be suitably countersunk, cut out ornotched to conform to the shape of the bushing member,

As illustrated in the drawings, Figure l, the mi' bushing members mayextend a little more than half Way around the dowels to form an arc ofmore than 180. bushing is thereby provided that may be readily sprunginto place, insuring'- a tight, secure fit.

lie the bushing members, as clearly shown in Figure l, and serve asadditional means for hold-1 ing said'members securely in place. Aparticular advantage of these bushings, which are slightly more thansemi-circular, is their interchangeability. The major wearing surfacebetween bolster dowels and side frames occurs on the sides ltoward thebolster proper, as, shown at the Aangle A yin Figure l. After a car hasbeen in use for some time, the bushings will be worn much more over thisarea, than in any other portion The bolstermay then be jacked upor.-raised, the side frames removed, and the two l'ousl'iingmembers ofeach side frame interchanged. This necessarily brings the least wornportions into the position of greatest wear and turnsthe worn parts to aposition where high wear resistance is not needed. i The bolster dowlels may also each be provided witha tubular/ bushing member i3, Awhichis preferably tted tightly over the dowel, but is also prevented fromaccidentally coming oli by the spring cap 5. This -bushing member may besimilarly rotated to members may be of any suitable size, so long asbring fresh, substantially. unworn portions to the inner side of thedowels over the angle A. llt will lbe readily apparent that by thisassembly the bolster dowels and associated wearing parts may be rebushedwithout the addition of any riet/WM" parts, which is particularlyhelpful when repairs are needed at some point remote from the usualrepair shop. l

My invention, however, is distinctly not limited to interchangeablebushing members, but such they take care of the major portion of wear.For

example, bushing member lll may be of an arc less than and of a sizetofacilitate its insertion and removal more easilyl` such as describedin` my prior application S. `N. ,581,550, aforesaid.

The plates il supporting the`15 upper springs il on the side frame shelft overl Aas Such bushing members may also be designed so that they maybe inserted 'without raising the bolster as high as would be required inthecase of the embodiment shown in the drawings.

The terms and expressions which I have employed are used as terms ofdescription and not of limitation, and I have no intention, in the useof such terms and expressions, of excluding any equivalents of thefeatures shown and described 'or portions thereof, but recognize thatvarious modifications are possible within the scope of the inventionclaimed.

What I claim is:

1. In apparatus of the class described, the combination of a side framehaving openings therein, depending bolster dowels integral with thebolster projecting into said openings and replaceable means forcompensating for wear between said dowels and said side frame, saidmeans comprising removable members interspersed between said `dowels andthe walls of the openings in said,

side frame inward of said dowels.

2. In apparatus of the class described, the combination of a side framehaving openings therein, depending bolster dowels integral with thebolster projecting into said openings, and replaceable into `saidbolster opening and provided with-integral dowels projecting throughsaid openings in said spring seat, spring means on said seat forsupporting said bolster, and means held in place by said spring meansfor compensating for wear between said dowels and the walls of saidopenings in said spring seat.

4. In a truck for railway cars, the combination of a side frame having abolster opening, a spring seat beneath said bolster opening, said springseat having openings therein, a bolster extending into said bolsteropening and provided with` integral dowels projecting throughSaidppenings in said spring seat, and means for compensating for wearbetween said dowels and the walls of. said openings in said spring seat,said means comprising removable members interposed between said dowelsand said walls of said openings and arranged for interchanging with eachother in predetermined complementary positions.

5. In a railway car truck, the combination of a side frame having abolster opening, a shelf beneath said bolster opening, said shelf havingan openingl therein, a bolster extending into said bolster opening andprovided with an integral dowel projecting through said opening in saidshelf, and removable means held in place by said bolster forcompensating for wear between said dowel and the walls of said openingin said shelf.

6. In a railway car truck, the combination of a side frame having abolster opening, a shelf beneath said bolster opening, said shelf havinganopening therein, av bolster extending into said bolster opening andprovided with a dowel projecting through said opening in said shelf, and

means for compensating for wear between said lhaving a horizontalportion adapted to 'nt into said recess and a `depending portion adaptedIto extend between a wall or said opening and a portion of said bolsterdowel. 7. In a railway car truck, the combination of al side framehaving a bolster opening, a shelf beneath said bolster opening, saidshelf having an openingtherein, a bolster extending into said bolsteropening 'and provided with a dowel projecting through said opening insaid shelf, and means for'compensating for wear between said dowel andthe -walls of said opening in said shelf,

said opening communicating with an arcuate recess in said shelf, andsaid compensating means comprising a `removable arcuate member L- shapedin cross l section, one portion of which seats in said recess andanother portion of which extends between the wall of said opening and apart of said bolster dwel.

8. In a railway. car truck, a side frame having a bolster opening, abolster having an end thereof extending into' said opening, 'a dowel onsaid bolster and means for compensating for wear between portions ofsaid side frame .and dowel, said means comprising a bushing having apair of intersectingconcentric arcuate anges and positioned on said-side frame between the latter and the dowel. f

9.' In a railway `car truck, a side frame having a bolster opening, abolster having an end -thereof extending into said opening, a dowel onsaid bolster, and means for conpensating for wear between portions of said side frame and dowel, said means comprising a bushing consisting ofa segmental arcuate element L-shaped in cross section, said shim beingpositioned on said side frame between the latter and the dowel.

10. In a truck for railway cars, aside frame, a bolster having dowelsprojecting through an opening in said side frame, andarcuate bushingmember in said opening positioned at the area" of greatest wear betweenthe walls of ing and said bolster dowels.

11. In a truck for railway cars, -a side frame, a bolster having dowelsprojectingthrough an opening 'in said vside frame.- an arcuate bushing4- member of greater than ,180 insaid opening positioned at the area `ofgreatest wear -between the walls ofsaid opening and said bolster dowels.

12. In a truck for railwaycars, a side frame,`

greatest wear between the walls of said opening' and said bolsterdowels.

13. In a truck for railway cars, a side frame,

. .4o said opena `bolster having dowelsprojecting through an' opening insaidsideframe, an arcuatebushing member in said opening positioned atthe area of greatest wear between the walls of said opening and saidbolster dowels, and bushing members on s aid dowels cooperatingtherewith.

14. In a railway car truck a lside frame having a bolster opening, abolster having an end thereof extending into said opening, and means forJAMES A. SHAFER.

